Join Date: Aug 2016
Location: Northwest USA
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Glad the GMRC-01 worked for you. IF you are gonig to use the Pioneer Amp to power your door speakers there is a couple of things that you could do. Or if you are talking about using the Pioneer Amp to power some Subs or other speakers not already in the car...
One if you are going to use say a 4 Ch Amp and want to power your speakers in the car. You could make that connection at the trunk and disconnect the wires from the Factory Amp to send the power to the speakers from the new amp... Blue wire could stay at the Harness side would just need to get the wire from the trunk area for new amp.
Two if you want to power the speakers with a new amp and want to add new wire to the speaker locations and have all new wiring for your Auto System (What I do) Then you would disconnect the blue wire from the OEM Amp and also wouldn't need the Grey, white, green and purple wires on your wire harness connected either.. Run the RCA's from the Radio to the new amp and run blue wire from radio to amp.
Powering a Sub or Subs, Then you would want to use the Blue wire to Remote both your OEM amp and the new Pioneer amp, So would make a Y connection from the blue wire on the deck, one going to the wiring harness and one going to the new amp.. If your New head unit has 3 sets then use the Sub set for your subs, If only 2 sets then I would use the Rear set for your subs. If only 1 then you only have one choice without using a LOC...
What people don't understand when they buy a head unit if going to do a Multi Amp setup or even why 3 sets of RCA are smart. One and the main reason is unless you are going to have a Processor. The Sub RCA is good because if you want to fade from front to back or back to front the control to the Subs don't change. However if you have it say going to the rear set of RCA's, If you fade your radio to the front you would loose the subs as well. With 3 Sets you would be able to have control on all 3 sets. Also in some cases you could even control how much is going to the sub output from the head unit kind of like a fader but is a Sub Volume control.
It isn't what you Drive that matters, It is how you drive it.